15. Procter & Gamble

Tough interview question: "Describe a situation in your life in which you feel had the most important effect on your life today and the values you follow" -Procter & Gamble Intern Candidate (Jackson, TN)

5. ZS Associates

Tough interview question: "A pharma company you are consulting is coming up with 2 new products. What factors would help them decide how to distribute their sales force?" -ZS Associates Associate Candidate (San Mateo, CA)

4. A.T. Kearney

Tough interview question: "After streamlining and reducing purchasing cost for raw materials, can you think of another way to reduce the cost of making a piece of chocolate?" - A.T. Kearney Business Analyst Candidate (location n/a)